Portion of shoe bottom



FIG. 1 is a perspective view of a portion of a shoe bottom showing mynew design;

FIG. 2 is a left side elevational view thereof; and,

FIG. 3 is a bottom plan view thereof.

The broken lines shown throughout the views illustrate the environmentin which the design resides, and form no part of the claim.

The ornamental design for a portion of a shoe bottom, as shown anddescribed.